Nagaraj, M. et al. 2026. Approximate Controllability Results for Impulsive Partial Functional Nonlocal Integro-differential Evolution Systems through Resolvent Operators. Discontinuity, Nonlinearity, and Complexity. 7, 3 (Aug. 2026), 305–325. DOI:https://doi.org/10.5890/DNC.2018.09.008.